<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<script>
var DG = frameElement.lhgDG;
DG.addBtn( 'ok', '确定', ok );
function ok()
{
    // 这里写你要操作的代码，最后写刷新代码
    DG.curWin.location.reload();
}
</script>
test
</body>
</html>